使用六角形角创建UIImage或UIImageView

Question

是否可以创建具有六角形角的UIImage或UIImageView？因为我想要一个UIImage并在UIImageView中显示它，但在内部和六边形。感谢

Answer 1

过了一会儿，我发现了一个简单的实现。我创建了一个六角形视图：

HexagonView.h

#import <UIKit/UIKit.h>

@interface HexagonView : UIView
@end

HexagonView.m

#import "HexagonView.h"
#import <QuartzCore/QuartzCore.h>

@implementation HexagonView

- (void)drawRect:(CGRect)rect {

    CAShapeLayer *maskLayer = [CAShapeLayer layer];
    maskLayer.fillRule = kCAFillRuleEvenOdd;
    maskLayer.frame = self.bounds;

    CGFloat width = self.frame.size.width;
    CGFloat height = self.frame.size.height;
    CGFloat hPadding = width * 1 / 8 / 2;

    UIGraphicsBeginImageContext(self.frame.size);
    UIBezierPath *path = [UIBezierPath bezierPath];
    [path moveToPoint:CGPointMake(width/2, 0)];
    [path addLineToPoint:CGPointMake(width - hPadding, height / 4)];
    [path addLineToPoint:CGPointMake(width - hPadding, height * 3 / 4)];
    [path addLineToPoint:CGPointMake(width / 2, height)];
    [path addLineToPoint:CGPointMake(hPadding, height * 3 / 4)];
    [path addLineToPoint:CGPointMake(hPadding, height / 4)];
    [path closePath];
    [path closePath];
    [path fill];
    [path stroke];

    maskLayer.path = path.CGPath;

    UIGraphicsEndImageContext();

    self.layer.mask = maskLayer;

}

@end

然后我在HexagonView上添加了我的ImageView子视图：

[hexagonView addSubview:scaledImageView];

结果如下：